Automobile-alarm



Anwenonnnnnnn;

A23/men Appneatim med my es, me.

Be .it known that Il, @rn-onen l'. CAMP- BELL, a ciiizen of' the UnitedSim-es, residing Si. Louis, Siate of Miseou, have in# i vengerel oerannew and useful Tnpzovo-` ments in Anonoble-Alams, of which ne followingis o full, ole-an, and. eme-5 clesc'lpon, refel'enoe being had lo theaccompanying' drawngf, forming par?, heeoif.

The presennven''lon is dneczed to nnpovenens in automobile olamns, and,lans fol its object to prov-ide an antoine" 'e with fm ala-fm(preferably eleorio) Wl'nlv, will lnvoperaion in the. @Veni an nn-:mtholzez person enlpers Wl the oar or makes an atenlp't to sen] unesame A lfnthel oblleo is to @33m-ido on alarm -lmt may be :Lta-ol'led toany make ofantoznobile,

' one which. is sim le in Constnoon To ble, sheep, easily applie, andone possessing nrhef and other advantages oet-ter eppenronl thefollowing detailed description. n. Connection with the accompanying d'awings in Which- V lignre l epfesents a side elevation of an automobilehaving my invention oppleol tnereo; Fig. 2 s a front elevation o1 the@lawn einnehmen@ Fig. 3 is a vereal crossseoton on line 3-8 of Fig. 2;Fig. 4- s reet? elevzvtonvwth,the real Wall of lle casing removed; Fig.5 is a ootom plan Wl n poton of the bottom well of the Y' lien away; 3is atop plan ine op Wall of the casing broken Fl@ 7 is o diagrammaticView Aeccentric pin trav- Un mb C, fepresents; en'onol om? orautomobile, lle front V17 of which Carries the usuel spul f *Willi Wllonmeshes f! pinion 7) nni otaon to he exible lrving memor shaft sp'oeced., os Well unclestooc in fnlze art, oy oue? flexible sleeve or(also i le slank .8. nsually vconsntng the l l in: the peeclometegenerally mounted flash o' lnst'innent board `D of the S aforesaid areWell nown in elle anni, :and 'are ollnded lo herein for zfezson hejz 1nthenresent embodi- Specification of Leiters Patent,

Sera no.

,ment of my invenyon ille eri is use of l l Tolar); spindle o l in@ihefI-honsng lo? 3 Chun/:JY lof @gun lock, the inner d el? z plugternnna 11i-yi: Uff P951;

contiguous walls olf-*the on the inner faces of lle 'ont a; nl rem'walls of the casing l :ne guide Sps zf, disposed in pas, lnetwee whichis slnlaoly mouned block o2? nonnng of ber equivalent nsllaing naief 1x,i5, one enfl of which (the innen end) l1?" 1 ed 'an .L .om tonmle of thepine :serving: as contacts or 'the end o an Y in SWt/lx il? mounted.pvoinlly lo -hfe block 6 on the fao@ 'linnen o which the smooth o nwel,l; 17min I binding posi for one end the oonfl wire fw lei'lln lnem'liez' wue en lea-M ing in a roller bearing 15 in the inner extension13 of the nipple 13. Secured to the spindle 14 (and suitably insulatedtherefrom) between the block 6 and the upper wall of the casing, andrevolving in the plane of oscillation of the switch 10, is a twoarmeddog or tripper 16 either armof which is adapted to impinge against thetree end of the switch and move the same into engagement with either ofthe contacts 8, 8', depending on the direction of rotation of thespindle, when the block 6 is moved sutliciently to bring the free end ofthe switch in the path of travel of the dog or near enough to -oul thedog. .Ordinarily, the position of the block 6 is such that the switchisout of reach of the arms of the dog, a slight inward movement howeverbeing sufficient to bring the switch in the path of the dog and causethe switch .to be oscillated into engagement with one of the con-v tacts8, 8. This movement is accomplished 4 as follows :v The front end of theblock 6 is Aao provided with a transverse groove m which is traversed bythe eccentric pin or stud 4; and when the plug 3 carrying the stud isturned by the key K in one direction the block will be shifted inwardlyor toward the spindle 14, and when the key is turned in the oppositedirection the block will be shifted away from the spindle, the slidingmovements imparted to the block by the pin 4 resulting from the actionof the pin against the side walls of the groove m as clearly obviousfrom the drawings (Fig. 7).

l Leading from the top wall ot the casing 1 on opposite sides of thehinge axis (pivot pin 11) of the switch 10 and disposed par-- allel tosaid axis and across the plane of movement of the block 6, are resettingpins 17, 17, which, with a return of the block 6 toits normal position,open the switch 10 4and restore the same to its central normal positionbetween the contacts 8, 8, bringing the free end of the switch in thepath of rotation of the arms of the dog 16 and in readiness Vto beimpin'ge'd by the dog when the'block is subsequently-moved toward thespindle 14 to cause an alarm to be sounded in the event some one tamperswith the machine.

The operation -is substantially as follows: When the car. is in service,the block 6, by a rotation of the plug 3 in proper' direction, 1s

moved or adjusted to a position to bring the free end of the switch 10out of the path of rotation of the dog 16. In this movement (which wemay term as the outward movement), and assuming that thev switch hadpreviously been in engagement with. the inner contact 8 (Fig. 6"), thetop pin 17 will ride along the inner vedge of the switch and depress thelatter to the intermediate dotted central or open position shown in saidfigure.'

Had the switch been in engagement with the outer contact 8 then in themovement aforesaid, theouterpin 17 would have correspondingly pushed theswitch to its ccntral open position. n either case the movement ot theswitch is an Aoscillatory one fromA one contact 8 toward the oppositecontact 8 (or vice versa) the tree end ot' the switch describing an arcwhose cosine progressively increases as the switch approaches thehorizontal (Figs. 5, 6,) or assaid end moves away `from the contact.This throw of thel switch brings the tree enfl of the switch in the pathof rotation of the dog 16 when the block is subsequently moved towardthe spindle 14. Thus, in Fig. 5 where the dottedposition of the switchl() corresponds to the intermediate dotted position in Fig. 6, and inwhich Fig. 5 the block 6 is shown moved inward, it will be seen that thefree end of the switchv is in the direct path of rotation of the arms ofthe dog, so that the dog will oscillate or trip the switch intoengagement with either the contact 8 or 8 depending on the direction inwhich the dog is rotating. As previously described, when the'engine isrunning and the car is started, the flexible shaft s will rotate thespindle' 14 and the dog 16 carried thereby. When therefore the block 6is moved inward so. as to cause the switch to foul the dog, the latterwill strike or trip the switch and carry it along until the same'engages either one'or the other of the contacts 8, 8, depending on thedirection of rotation of the spindle 14, this direction being determinedby the direction .of travel of the car (forward or backward). The switchhaving been tripped' by the. dog and moved into engagement with one ofthe contacts (8, 8,) the dog then simply passes off-4 ico person istampering with the car or is aty tempting to stealit. Only the owner ofthe car or some authorized person who lhas the key can set the alarm bymoving the block Y 6 with its switch 10 to proper position to bring'thefree end `of the switch in the path of rotation oi' the dog (Fig. 5). Itno one tampers with the machine, then when the owner is ready to startthe ear he takes the key K, and by rotating the. plug 8 in properdirection, or away t om the'spindle .14 so as to* bring the tree endetvthe switch -out of the path ofthe dog .(see dotted position oi the blockand middle dotted position of .the switch'in Fig'), whereupon the cardass not maids,

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@om nu o vhoux,

e inven- @med law@

of beslis nu D the switchxto its fiorma'i open position besides of theaxis of oscillation of the switch lo `tween the Acontacts with amovement i of the and acrossthe piane of reciprocaton of the block inthe opposite direction. block, as set forth. v 5. 1h an` alarm of Ihecharacter described, y In testimony whereof ax my signature areciprooable block, an oscillating switch. in presence of two Witnesses.

mounted on one'faeethereof, contacts onthe GEORGE M. CAMPBELL.

block spaced apart for engaging the free end Witnesses 1' ofthe` switch,a casing., and parallel reset- EMIL STAREK,

ting pinsvon the casing disposed on opposite ELSE M. SIEGEL.

